In 2011 and 2012, Dr. Tyson was selected by TIME as one of the world’s 140 most influential tweeters as part of the magazine’s list of individuals and organizations whose Twitter feeds are “shaping the online conversation.”

Tyson’s tweets often pack a lighthearted but substantive scientific punch in under 140 characters. Recently, he tweeted, "Not that anybody asked, but every adult human radiates at about 100 Watts—in the infrared."

Follow @neiltyson to get regular tweets from Tyson and @AMNH for news from the Museum.